GB1189725A - Method for Communicating Information Between Artificial Satellite and Ground. - Google Patents

Method for Communicating Information Between Artificial Satellite and Ground.

Info

Publication number
GB1189725A
GB1189725A GB3373167A GB3373167A GB1189725A GB 1189725 A GB1189725 A GB 1189725A GB 3373167 A GB3373167 A GB 3373167A GB 3373167 A GB3373167 A GB 3373167A GB 1189725 A GB1189725 A GB 1189725A
Authority
GB
United Kingdom
Prior art keywords
satellite
centre
area
command signal
operates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3373167A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1189725A publication Critical patent/GB1189725A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Radio Relay Systems (AREA)

Abstract

1,189,725. Radio signalling. HITACHI Ltd. 21 July, 1967 [5 Aug., 1966], No. 33731/67. Heading H4L. In a system for transmitting by artificial satellite pictures relating to weather conditions, the satellite 12, Fig. 3, follows an orbit 14 round the earth 11 and co-operates with a ground control centre 13 situated in an area S 0 for which the weather conditions are to be determined, and also co-operates with a plurality of radio receivers 15 in an area S 2 which are each concerned only with local weather information as covered by area S 1 by direct radiation from the satellite. In order to cover the range S 0 it is necessary to take a plurality of pictures each covering the range S 1 and this information is stored in the satellite and received at centre 13 on the next orbit. The satellite carries a television camera 20, a storage device, e.g. a tape recorder 21, a transmitter 22 and a control device 24. When the satellite is passing over area S 0 a command signal from centre 13 (or a programme previously stored in the satellite) causes the camera to operate via switch 25 on a system, for example, with 800 scanning lines, a picture frame time of 6À5 secs. and an exposure interval of 108 secs., switch 27 being kept open. These pictures are recorded at 21 and on the next orbit a command signal from centre 13 causes them to be transmitted to the centre for recording and display at 30, 31. When the satellite is passing over area S 2 a stored command signal or a command signal from a relay station associated with centre 13 operates switch 27 to stop the storage operation, and via switch 26 causes the camera to operate on a system, for example, with 800 scanning lines, a picture frame time of 200 seconds, and an exposure interval of 208 seconds, this information being transmitted directly to ground.
GB3373167A 1966-08-05 1967-07-21 Method for Communicating Information Between Artificial Satellite and Ground. Expired GB1189725A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5105966 1966-08-05

Publications (1)

Publication Number Publication Date
GB1189725A true GB1189725A (en) 1970-04-29

Family

ID=12876217

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3373167A Expired GB1189725A (en) 1966-08-05 1967-07-21 Method for Communicating Information Between Artificial Satellite and Ground.

Country Status (2)

Country Link
FR (1) FR1548385A (en)
GB (1) GB1189725A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2910956C2 (en) * 1979-03-21 1981-06-11 Siemens AG, 1000 Berlin und 8000 München Procedure for the transmission of data

Also Published As

Publication number Publication date
FR1548385A (en) 1968-12-06

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees